CN104033154B - The TBM propulsion hydraulic system of double mode switching - Google Patents

The TBM propulsion hydraulic system of double mode switching Download PDF

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CN104033154B
CN104033154B CN201410241399.2A CN201410241399A CN104033154B CN 104033154 B CN104033154 B CN 104033154B CN 201410241399 A CN201410241399 A CN 201410241399A CN 104033154 B CN104033154 B CN 104033154B
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oil
valve
way
propelling cylinder
tbm
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CN104033154A (en
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龚国芳
张振
饶云意
吴伟强
刘统
杨华勇
张千里
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Zhejiang University ZJU
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Zhejiang University ZJU
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Abstract

The invention discloses a kind of TBM propulsion hydraulic system of double mode switching.Comprise oil sources, the propulsion die that two structures are identical and two four-way electromagnetic reversing valves that implementation pattern switches.Four propulsion cylinder common control systems in double mode, control easily when straight line tunnel excavation operating mode, solve the control challenge that long-time grouping controls to bring, four oil cylinders are exerted oneself equal and opposite in direction, strictly ensure that with joint efforts along girder direction, eliminate the error departing from desired trajectory controlling separately to bring; Left and right module grouping control mode in double mode, considerably reduce TBM at tunnel bend place, and internal force during tuning, make with joint efforts along girder direction, solve the problem that the damage problem of the oil cylinder propulsive force TBM mechanism member brought of imbalance and Hydraulic Elements and tunnel depart from predetermined curve.

Description

The TBM propulsion hydraulic system of double mode switching
Technical field
The present invention relates to TBM propulsion hydraulic system, particularly relate to and realize four hydraulic cylinder co-controllings and the one double mode switching TBM propulsion hydraulic system dividing into groups to control.
Background technology
Hard rock tunnel development machine (TunnelBoringMachine is called for short TBM).TBM adopts mechanical type to break rock, and make cutterhead compress rock by propulsion system, cutterhead rotates under the driving of variable-frequency motor or hydraulic motor, broken under the cutter squeezing action of rock on cutterhead, thus makes tunnel one-shot forming.TBM be collection constructing tunnel excavation, muck removal, dust removal by ventilation, lay tunnel path and geomantic omen electricity and extend one, have fast, high-quality, safety, the construction characteristic such as environmental protection, realize the big machinery equipment of the factory operation of major long tunnel construction.
Open TBM is widely used in hard rock geological conditions, and wherein the TBM of horizontal support is more representative, applies also more extensive.TBM propulsion system mainly provides thrust in cutterhead rock break-off process, provides pulling force when cutterhead retreats, and realizes propulsion cylinder and regain fast in the process of changing step.
Current TBM propulsion system, thrust is provided together by four hydraulic cylinders, and four hydraulic cylinder co-controllings in parallel, therefore four propelling hydraulic cylinders are exerted oneself identical, in practice of construction, especially at bend place because four hydraulic cylinders are exerted oneself identical, make to make a concerted effort not along girder direction, easy generation cross bearing pin damages, rail damage between saddletree and girder is serious, girder welding seam breaking, the tunnel excavated departs from predetermined curve, and hydraulic propelling system inside produces a series of unfavorable phenomenon of the harm Hydraulic Elements such as air pocket and local super-pressure.Therefore, current TBM propulsion system reduces the application life of TBM complete machine and the excavation precision in tunnel.
Summary of the invention
For overcoming in existing TBM work progress, especially the tunnel in curved tunnel digging process departs from predetermined curve, and TBM mechanical component easy damaged, the problem such as in propulsion system Hydraulic Elements are fragile, take into account four hydraulic cylinder parallel connections simultaneously, control simple, and the advantage that precision is higher in straight tunnel digging process, the object of the present invention is to provide a kind of TBM propulsion hydraulic system of double mode switching.
The technical scheme that technical solution problem of the present invention adopts is:
The present invention includes oil sources, the propulsion die that two structures are identical and two four-way electromagnetic reversing valves that implementation pattern switches;
Each propulsion die comprises: proportional pressure-reducing valve, proportional throttle valve, three-position four-way electromagnetic directional valve, two propelling cylinder, pressure meter, pressure sensor and overflow valves in parallel, the oil-in of proportional pressure-reducing valve is connected with the second one way valve oil-out in oil sources, the oil-out of proportional pressure-reducing valve and proportional throttle valve oil-in be connected, the oil-out of proportional throttle valve is communicated with the oil inlet P 9 of three-position four-way electromagnetic directional valve, oil return inlet T 9 and the fuel tank of three-position four-way electromagnetic directional valve are connected, the three-position four-way electromagnetic directional valve first actuator port A9 propelling cylinder rod chamber in parallel with two is connected, the rodless cavity of the propelling cylinder that the second actuator port B9 is in parallel with two is connected, pressure meter, pressure sensor is all connected with the rodless cavity of propelling cylinder, the oil-in of overflow valve and the rodless cavity of propelling cylinder are connected, the oil-out of overflow valve and fuel tank are connected,
The annexation of the propulsion die that two four-way electromagnetic reversing valves are identical with two structures is: the oil inlet P 13 of the rodless cavity of the propelling cylinder of side parallel connection and two four-way electromagnetic reversing valves is connected, the rodless cavity of the propelling cylinder that the first actuator port A13 of two four-way electromagnetic reversing valves is in parallel with opposite side is connected, the rod chamber of the propelling cylinder of side parallel connection and the oil return inlet T 13 of two position and four-way reversing valves are connected, and the rod chamber of the propelling cylinder that the second actuator port B13 of two position and four-way reversing valves is in parallel with opposite side is connected.
Described oil sources comprises: motor, yielding coupling, variable pump, strainer, the first one way valve, the second one way valve, safety valve and fuel tank; Motor is connected by yielding coupling and variable pump, the oil-in of variable pump is connected with fuel tank, the oil-out of variable pump is connected with the oil-in of strainer, first one way valve is connected across between the oil-in of strainer and the oil-out of strainer, the oil-in of the second one way valve and the oil-out of strainer are connected, the oil-out of the second one way valve is connected with the oil-in of safety valve, and the oil-out of safety valve is connected with fuel tank.
The present invention is compared with background technology, and the beneficial effect had is:
1) four propulsion cylinder common control systems in double mode, control easily when straight line tunnel excavation operating mode, solve the control challenge that long-time grouping controls to bring, four oil cylinders are exerted oneself equal and opposite in direction, strictly ensure that with joint efforts along girder direction, eliminate the error departing from desired trajectory controlling separately to bring.
2) the left and right module grouping control mode in double mode, considerably reduce TBM at tunnel bend place, and internal force during tuning, make with joint efforts along girder direction, solve the problem that the damage problem of the oil cylinder propulsive force TBM mechanism member brought of imbalance and Hydraulic Elements and tunnel depart from predetermined curve.
Accompanying drawing explanation
Fig. 1 is the TBM propulsion hydraulic system structural representation of double mode switching.
In figure: 1. motor, 2. yielding coupling, 3. variable pump, 4. strainer, 5. the first one way valve, 6. the second one way valve, 7. proportional pressure-reducing valve, 8. proportional throttle valve, 9. three-position four-way electromagnetic directional valve, 10. propelling cylinder, 11. pressure meters, 12. pressure sensors, 13. two-position four-way solenoid operated directional valves, 14. overflow valves, 15. safety valves, 16. fuel tanks.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, the present invention includes oil sources, the propulsion die that two structures are identical and two four-way electromagnetic reversing valves 13 that implementation pattern switches;
Each propulsion die comprises: proportional pressure-reducing valve 7, proportional throttle valve 8, three-position four-way electromagnetic directional valve 9, two propelling cylinders in parallel 10, pressure meter 11, pressure sensor 12 and overflow valves 14, the oil-in of proportional pressure-reducing valve 7 is connected with the second one way valve 6 oil-out in oil sources, the oil-out of proportional pressure-reducing valve 7 with 8 of proportional throttle valve oil-in be connected, the oil-out of proportional throttle valve 8 is communicated with the oil inlet P 9 of three-position four-way electromagnetic directional valve 9, oil return inlet T 9 and the fuel tank of three-position four-way electromagnetic directional valve 9 are connected, three-position four-way electromagnetic directional valve 9 first actuator port A9 propelling cylinder 10 rod chamber in parallel with two is connected, the rodless cavity of the propelling cylinder 10 that the second actuator port B9 is in parallel with two is connected, pressure meter 11, pressure sensor 12 is all connected with the rodless cavity of propelling cylinder 10, the oil-in of overflow valve 14 and the rodless cavity of propelling cylinder 10 are connected, oil-out and the fuel tank 16 of overflow valve 14 are connected,
The annexation of the propulsion die that two four-way electromagnetic reversing valves 13 are identical with two structures is: the rodless cavity of the propelling cylinder 10 of side parallel connection and the oil inlet P 13 of two four-way electromagnetic reversing valves 13 are connected, the rodless cavity of the propelling cylinder that the first actuator port A13 of two four-way electromagnetic reversing valves 13 is in parallel with opposite side is connected, the rod chamber of the propelling cylinder of side parallel connection and the oil return inlet T 13 of two position and four-way reversing valves 13 are connected, and the rod chamber of the propelling cylinder that the second actuator port B13 of two position and four-way reversing valves is in parallel with opposite side is connected.
Described oil sources comprises: motor 1, yielding coupling 2, variable pump 3, strainer 4, first one way valve 5, second one way valve 6, safety valve 15 and fuel tank 16; Motor 1 is connected by yielding coupling 2 and variable pump 3, the oil-in of variable pump 3 is connected with fuel tank 16, the oil-out of variable pump 3 is connected with the oil-in of strainer 4, first one way valve 5 is connected across between the oil-in of strainer 4 and the oil-out of strainer 4, the oil-in of the second one way valve 6 and the oil-out of strainer 4 are connected, the oil-out of the second one way valve 6 is connected with the oil-in of safety valve 15, and the oil-out of safety valve 15 is connected with fuel tank 16.
Operating principle of the present invention is as follows:
TBM is at excavation curved tunnel, or when needing slight tuning when linear advancement, the electromagnet dead electricity of two-position four way change valve 13, bottom (right position) connecting system of reversal valve 13, the oil cylinder of left and right propulsion die is separated, four propelling cylinders are divided into two groups, left and right, control respectively, wherein the control of left propulsion die is: motor 1 obtains electric startup, by yielding coupling 2, moment of torsion is passed to variable pump 3, variable pump 3 rotates, by inlet port from fuel tank oil suction, the pressure oil that variable pump 3 pumps enters the second one way valve 6 through strainer 4, first one way valve 5 pair strainers 4 in parallel with strainer 4 shield, when strainer 4 pressure at two ends is too high, the first one way valve 5 is opened, thus reduce the pressure at strainer two ends, second one way valve 6 is to pumping up protective effect, prevent from buffer brake oil from producing pump to impact.Enter the entrance of proportional pressure-reducing valve 7 from the pressure oil of the second one way valve 6 outflow, input different signals by comparative example reducing valve 7, regulate the pressure of propelling cylinder rodless cavity in real time.Pressure oil enters the import of proportional throttle valve 8 from the outlet of proportional pressure-reducing valve 7, and passing ratio choke valve 8 controls the flow passing into propelling cylinder rodless cavity, thus controls fltting speed.The pressure oil flowed out from proportional throttle valve 8 enters three-position four-way electromagnetic directional valve 9, when on the right side of three-position four-way electromagnetic directional valve 9, electromagnet obtains electric, three-position four-way electromagnetic directional valve 9 right connecting systems, pressure oil directly enters propelling cylinder 10 rodless cavity, the piston rod of propelling cylinder 10 stretches out, propelling cutterhead advances, when on the left of three-position four-way electromagnetic directional valve 9, electromagnet obtains electric, the left position connecting system of three-position four-way electromagnetic directional valve 9, pressure oil enters the rod chamber of propelling cylinder 10, makes cutterhead retreat or complete the process of changing step.Pressure meter 11 is connected on the rodless cavity of propelling cylinder 10, the pressure of display propulsion cylinder 10 rodless cavity.Pressure sensor 12 is connected on the rodless cavity of propelling cylinder 10 equally, and pressure signal is returned to control system.Overflow valve 14 is connected on the rodless cavity of propelling cylinder 10, and the maximum working pressure of restriction rodless cavity, plays safety effect.The control procedure of the control of right propulsion die left propulsion die as elucidated before, by regulating left and right propulsion die proportional pressure-reducing valve separately, make making a concerted effort along girder direction of left and right propulsion cylinder, thus the internal force problem eliminated because co-controlling brings, alleviate the damage to TBM component, improve the excavation precision in tunnel.
TBM is when linear advancement, the electromagnet of two-position four-way solenoid operated directional valve 13 obtains electric, upper (left position) connecting system of two-position four-way solenoid operated directional valve 13, realize the parallel connection of four oil cylinders, four oil cylinders share the proportional pressure-reducing valve 7 of left propulsion die, proportional throttle valve 8, three-position four-way electromagnetic directional valve 9 realizes co-controlling, concrete grammar with foregoing divide into groups to control in the independent control method of left propulsion die identical, the problem solving the linear advancement operating conditions complexity of the time of being in the great majority like this and the excavation track brought due to departure depart from the problem of predetermined curve.

Claims (2)

1. a TBM propulsion hydraulic system for double mode switching, is characterized in that: comprise oil sources, the propulsion die that two structures are identical and realize two four-way electromagnetic reversing valves (13) that propelling pattern switches;
Each propulsion die comprises: proportional pressure-reducing valve (7), proportional throttle valve (8), three-position four-way electromagnetic directional valve (9), two propelling cylinder (10), pressure meter (11), pressure sensor (12) and overflow valves (14) in parallel, the oil-in of proportional pressure-reducing valve (7) is connected with the second one way valve (6) oil-out in oil sources, the oil-out of proportional pressure-reducing valve (7) is connected with the oil-in of proportional throttle valve (8), the oil-out of proportional throttle valve (8) is communicated with the oil inlet P 9 of three-position four-way electromagnetic directional valve (9), oil return inlet T 9 and the fuel tank of three-position four-way electromagnetic directional valve (9) are connected, three-position four-way electromagnetic directional valve (9) first actuator port A9 propelling cylinder (10) rod chamber in parallel with two is connected, the rodless cavity of the propelling cylinder (10) that the second actuator port B9 is in parallel with two is connected, pressure meter (11), pressure sensor (12) is all connected with the rodless cavity of propelling cylinder (10), the oil-in of overflow valve (14) and the rodless cavity of propelling cylinder (10) are connected, oil-out and the fuel tank (16) of overflow valve (14) are connected,
The annexation of the propulsion die that two four-way electromagnetic reversing valves (13) are identical with two structures is: the rodless cavity of the propelling cylinder (10) of side parallel connection and the oil inlet P 13 of two four-way electromagnetic reversing valves (13) are connected, the rodless cavity of the propelling cylinder that the first actuator port A13 of two four-way electromagnetic reversing valves (13) is in parallel with opposite side is connected, the rod chamber of the propelling cylinder of side parallel connection and the oil return inlet T 13 of two position and four-way reversing valves (13) are connected, and the rod chamber of the propelling cylinder that the second actuator port B13 of two position and four-way reversing valves is in parallel with opposite side is connected.
2. the TBM propulsion hydraulic system of a kind of double mode switching according to claim 1, is characterized in that: described oil sources comprises: motor (1), yielding coupling (2), variable pump (3), strainer (4), the first one way valve (5), the second one way valve (6), safety valve (15) and fuel tank (16); Motor (1) is connected by yielding coupling (2) and variable pump (3), the oil-in of variable pump (3) is connected with fuel tank (16), the oil-out of variable pump (3) is connected with the oil-in of strainer (4), first one way valve (5) is connected across between the oil-in of strainer (4) and the oil-out of strainer (4), the oil-in of the second one way valve (6) and the oil-out of strainer (4) are connected, the oil-out of the second one way valve (6) is connected with the oil-in of safety valve (15), and the oil-out of safety valve (15) is connected with fuel tank (16).
CN201410241399.2A 2014-06-03 2014-06-03 The TBM propulsion hydraulic system of double mode switching Active CN104033154B (en)

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CN106762884A (en) * 2017-03-13 2017-05-31 浙江大学 Based on the vertical tuning hydraulic systems of pressure compensated TBM

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